[Kindle Fire HDX 7" & 8.9" Q&A, Help & Troubleshoot] ignoramous:
Hi,

I managed to root the Saturn (2014 HDX) on 4.5.2 using KingRoot 4.0+. I adb-pushed the latest ARM-4.4 GApps downloaded from OpenGapps: Apps went into /system/priv-app and the libs into /system/lib.

After having cleared the dalvik-cache, when I reboot in to the device, gms continually crashes with:

I/ActivityManager( 1014): Start proc com.google.android.gms for service com.google.android.gms/.icing.service.IndexService: pid=7125 uid=32004 gids={72004, 3003, 1007, 1028, 1015, 3002, 3001, 3007, 2001, 3006, 9001}
E/AndroidRuntime( 7125): FATAL EXCEPTION: main
E/AndroidRuntime( 7125): Process: com.google.android.gms, PID: 7125
E/AndroidRuntime( 7125): java.lang.RuntimeException: Unable to instantiate application com.google.android.gms.common.app.GmsApplication: java.lang.NullPointerException
E/AndroidRuntime( 7125):	at android.app.LoadedApk.makeApplication(LoadedApk.java:551)
E/AndroidRuntime( 7125):	at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4558)
E/AndroidRuntime( 7125):	at android.app.ActivityThread.access$1500(ActivityThread.java:145)
E/AndroidRuntime( 7125):	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1276)
E/AndroidRuntime( 7125):	at android.os.Handler.dispatchMessage(Handler.java:102)
E/AndroidRuntime( 7125):	at android.os.Looper.loop(Looper.java:145)
E/AndroidRuntime( 7125):	at android.app.ActivityThread.main(ActivityThread.java:5266)
E/AndroidRuntime( 7125):	at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 7125):	at java.lang.reflect.Method.invoke(Method.java:515)
E/AndroidRuntime( 7125):	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:826)
E/AndroidRuntime( 7125):	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:642)
E/AndroidRuntime( 7125):	at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 7125): Caused by: java.lang.NullPointerException
E/AndroidRuntime( 7125):	at android.content.ContextWrapper.getSystemService(ContextWrapper.java:575)
E/AndroidRuntime( 7125):	at android.content.ContextWrapper.setProfileManager(ContextWrapper.java:88)
E/AndroidRuntime( 7125):	at android.content.ContextWrapper.<init>(ContextWrapper.java:63)
E/AndroidRuntime( 7125):	at com.google.android.gms.common.app.BaseApplicationContext.<init>(SourceFile:37)
E/AndroidRuntime( 7125):	at com.google.android.gms.common.app.BaseApplicationContext.<init>(SourceFile:33)
E/AndroidRuntime( 7125):	at com.google.android.gms.common.app.c.<init>(SourceFile:45)
E/AndroidRuntime( 7125):	at com.google.android.gms.common.app.GmsApplication.<init>(SourceFile:73)
E/AndroidRuntime( 7125):	at java.lang.Class.newInstanceImpl(Native Method)
E/AndroidRuntime( 7125):	at java.lang.Class.newInstance(Class.java:1208)
E/AndroidRuntime( 7125):	at android.app.Instrumentation.newApplication(Instrumentation.java:990)
E/AndroidRuntime( 7125):	at android.app.Instrumentation.newApplication(Instrumentation.java:975)
E/AndroidRuntime( 7125):	at android.app.LoadedApk.makeApplication(LoadedApk.java:525)
E/AndroidRuntime( 7125):	... 11 more
I/ActivityManager( 1014): handleApplicationCrash
I/AndroidRuntime( 7125): To Report FATAL to activityManagerService

Any pointers? GApps seem to work good with Apollo running 4.5.2 even without root... What am I missing?